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1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • HRD 260000116770

Certificate HRD 260000116770

Diamond specifications and retailer prices

From HK$8,889 HKD
As of November 6, 2026
Save HK$19,966 HKD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$28,855 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by HRD 260000116770. Listed at 15 retailers as of November 5, 2026, with prices from HK$8,889 to HK$28,855, a HK$19,966 spread on the same certified stone. NZ Jewellers lists it at HK$28,855. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.8°
OriginNatural
Grading LabHRD
CertificateHRD 260000116770
Dimensions6.34 × 6.39 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.34 mm6.39 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000116770
Side View
Table 56.0%Crown 36.6°Girdle: MED-MEDPavilion 40.8°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$28,855 HKD|Low: HK$8,889 HKD|High: HK$29,600 HKD|Avg: HK$14,845 HKD|-2.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 2HK$8,889 HKD
Retailer 9HK$10,842 HKD
Retailer 4HK$10,913 HKD
Retailer 12HK$11,070 HKD
Retailer 5HK$11,831 HKD
Retailer 13HK$12,372 HKD
Retailer 7HK$13,266 HKD
Retailer 3HK$13,651 HKD
Retailer 8HK$13,792 HKD
Retailer 11HK$15,424 HKD
Retailer 6HK$17,048 HKD
Retailer 14HK$19,527 HKD
Retailer 10HK$20,672 HKD
NZ JewellersHK$28,855 HKD

34 data points across 14 retailers

15 retailersHK$8,889 HKD to HK$28,855 HKD

A
Cheapest Retailer
-
HK$8,889 HKD
A
Retailer 2
-
HK$10,842 HKD
View
A
Retailer 3
-
HK$10,913 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$11,070 HKD
View
A
Retailer 5
-
HK$11,831 HKD
View
A
Retailer 6
-
HK$12,372 HKD
View
B+
Retailer 7
-
HK$13,196 HKD
View
A
Retailer 8
-
HK$13,266 HKD
View
B+
Retailer 9
-
HK$13,651 HKD
View
A
Retailer 10
-
HK$13,792 HKD
View
B+
Retailer 11
-
HK$15,424 HKD
View
B+
Retailer 12
-
HK$17,048 HKD
View
B
Retailer 13
-
HK$19,527 HKD
View
B
Retailer 14
-
HK$20,672 HKD
View
Most Expensive
B
NZ Jewellers
09ec0cc1-6dc2-4b6c-825e-9b34c40caf83 · Nov 5
HK$28,855 HKD
$3,678 USD
View
14 more retailers have this diamond
Prices start from HK$8,889 HKDSave up to HK$19,966 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.00ct Round
HK$8,889 HKD